James h



(No Model.)

J. H. FORBES.

LAMP. No. 362,828. Patented May 10, 1887.

UNiran STATES PAT NT OFFICE.

JAMES H. FORBES, OF ROCHESTER, NE\V YORK, ASSIGNOR OF ONEIIALF TO THE STEAM GAUGE AND'LANTERN COMPANY, OF SAME PLACE.

LAMP.

SPECIFICATION forming part of Letters Patent No. 362,828, dated May 10, 1887.

Application filed July 'I, 1886. Serial No. 207,202. (No model.)

To all whom it may concern.-

Be it known that I, JAMES H. FORBES, of the city of Rochester, in the county of Monroe and State of New York, have invented new and useful Improvements in Lamps, of which the following is a specification.

This invention relates to an improvement in the oil-conduits of bracket and suspended lan1pssuch, for instance, as are used for light- :0 ing the interior of railway and other cars.

The object of my invention is to render the oil-pot easily removable, so that the same can be detached and filled without disturbing the rest of the lamp structure.

My invention consists to that end of the im provements which will be hereinafter fullyset forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional elevation of a lamp provided with my improvements. Fig. 2 is a fragmentary sectional elevation of the oil-pot detached from the lamp, on a reduced scale. Fig. 3 is a bottom plan view of the lamp.

Like letters of reference refer to 1ike parts in the several figures.

A A. represent the wick-chambers of a duplex tubular lamp; B B, the globes; O, the central air-tube,provided at its upper end with branches 0 c, which terminate in bells D D 0 over the globes, and at its lower end with branches 6 c, which connect with the air-chambersEE,surrounding the wiclrchambers. All of these parts are old and well known and may be of any ordinary or suitable construction,

3 5 and the airsupply tubes may be replaced by any other suitable air-supply passages.

ff represent bent oil-pipes, which communicate at their outer lower ends with the wickchambers A A, and which are bent upwardly from the wick-chambers and extend with their horizontal portions across the top of the oilpot G.

f is a descending pipe connected centrally with the upper horizontal portions of the tubes ff and depending into the oil-pot G. The

pipef is provided near its lower end with inlet-openings h, and below its lower end with a cup, H, which is secured to and around the pipe f and which rises above the inlet-openings h, so as to prevent the oil from escaping therefrom when the oil-pot is removed. The upper horizontal portions of the oiLpipcs ff are rigidly secured to the lamp structure and are provided with a tapering collar, I, which surrounds the upper portion of the depending pipe f The oil-pot G is provided in its top with a central opening, in which is secured a down- Wardlytapering sleeve, J, whose upper portion fits tightly against the collar I, as represented in Fig. 1, thereby preventing the oil from being thrown out of the top opening of the oilpot by jarring the lamp. The sleeveJ is perforated, as shown, to enable the oil to pass from the sleeve into the oil-pot,and vice versa. The 6 oil-pot is secured in place by a hinged bar or bridge-tree, K, which is hinged to one of the pipesff, and secured at its opposite end by a spring'catch, 70, attached to the other pipe. The bar K extends across the bottom of the oil-pot and holds the latter securely against the collar I. The bottom of the oil-pot may be provided with feet Z an d a central stud, Z, which latter is surrounded by a circular loop, or, formed on the bar K. Any other suitable fastening device may be substituted for the bar K and catch 70.

Upon releasing the catch 7.: the oilreservoir can be removed from the lamp for filling, cleaning, &c. The oil which is contained in the pipesff' is retained in the same by means of the cup H,which, being filled with oil, seals or traps the lower end of the pipef and prevents the oil from escaping from the depend ing tubef. The pipesff f operate as si- 8 phons in conducting the oil from the oil-pot to the wick-chan1bers.

It is obvious that only one of'the pipesf f is employed when a lamp with a single burner is provided with my improvement.

The oil-supply pipes fff are filled the first time through the burner-tubes upon removing the burners, which latter are removably attached by slip-joints or screw-joints in the ordinary rnanner. After the oil-supply pipes 5 have been once filled with oil they will remain filled by drawing oil from the oil-pot.

I claim as my invention 1. In a lamp, the combination, with a wickchamber, of a detachable oil-pot and an oil- Ico supply pipe having its depending inlet end arranged in the 0i1-pot,and provided with a trap, whereby the oil is retained in the supply-pipe when the oil-pot is removed, substantially as set forth.

2. The combination,with the Wick-chamber A, of an oil-supply pipe, j, provided with a depending portiomf, a cup, H, secured to the lower end of the depending portion f and a removable oil-pot, G, substantially as set forth.

The combinati0n,with the wick-chamber. A, of an oil-pipe, f, provided with a depending portion, f having at its lower end a cup,

H, a tapering collar, T, secured to the supplypipe, and an oil-pot, G, provided with a ta per- 15 ing sleeve, J, substantially as set forth.

4. The combination,with the wick-chambers A A, of oil-supply pipes f f, provided with a' vcentral depending portion, fflhaving at its lower end a cup, H, a removable oil-pot, G, a 20 JAMES H. FORBES.

\Vitnesses:

P. L. SARMON, GEo. A. ALLEN. 

